An overview of German steel grades

After the Second World War, a wall in Berlin, Germany will be divided into East and west two national standards were respectively named TGL and DIN. The said steel grades in TGL steel grade and DIN standard in the representation of the same, so after the reunification of Germany is still DIN German industry standard code.
 
DIN (Deutsche Industria Norm) is a German industrial standard code. The standard DIN 17006 system unique designation of cast steel and cast iron. In recent years, Germany to adopt the European standard method that non alloy steel grades. The grades of S * * * S, said steel, * * * table by the minimum yield point (Mpa), sometimes a suffix symbol used to represent the state of quality or delivery. According to the different diameter or thickness of steel, allowing for the same brand with the carbon content of steel is adjusted.
 
The other is the DIN 17007 system standard. It is a combination of 7 numbers into the material, in general, with 5 numbers, and can be used with a number of symbols (code) for the W-Nr. Such as 42CrMo4 for grades, 1.7725 for the material number.